Improved suction-hose



' ducting water unde ALBERT F. ALLEN, .10F PROVIDENCE, yRHODE ISLAND.

Letters Patent No. 100,244, datedA March 1, 1870.

mpnovnn soorten-Hose.l

The Schedule referred to in these Letters Patent and part of the sme.

To all whom fitmay concern Be it known that I, ALBERT F. ALLEN, of the city and county of Providence, and State of Rhode Island, have invented a new and improved Article of Suction- Hose; and I do hereby declare that the following specication, taken in connection with the` drawings furnished 'and forming a part of the same, is .a true, clear, and exact description thereof'.

My invention consists in the novel combination of seamless hose, treated with a suitable water-proof compound, with a metallic wire lining laid spirally.

Reference being had to the drawings- Figure 1' represents a piece of my improved suction in perspective.

A represents theouter covering.

B represents the metallic wire.

Figure 2 represents the same in longitudinal vertical section. v f

The'use of wire between inner and outer coatings of leather or other materials has been long known-in connection with the manufacture of suctioufhose.

Its object has been merely to secure a propel' resistance in the walls of thehose to the vacuum-force of a suction-pump.

The use of plate-metal rings within suction-hose has also been common, in which case the ends were made alternately large and small, so as to fit one into the other and still admit of the desirable flexibility.

In the use of' the former article it was found to be expensive, heavy, and cumbersome. As tothe latter,l it answered the ordinary purpose of suction-hose, butV when attached to a' me -thepurpose of foon;

pressure toa l le-eugine ptmp, the expansion o .the coatingv or n( n y the hose would release th rings,kand,they' u allbe driven in the direction of the tlow, and so wedge up as' to render the suction-hose rigid and unfit for the ordinary `uses to which such is usually applied.

v As lightness in suction-hose, combined withgreat strength of resistance to-inward as well as from outwardv (or vacuum) pressure, is a great desideratum,'I

have sought to meet it, and have Ipractically sucneeded-in the combination of seamless woveuvhose with the wire lining described.

l roven suction-hose, as heretofore constructed, was

composed ot' biased cut pieces of suitable fabric,

treated with water-proof compounds and wound spirally one over the other until the requisite strength and thickness was attained. i

By the use of the seamless hose, in combination with wire arranged within and laidy in accordance-with my invention, I secure a greater degree of strength,

has heretofore been accomplished. l

lighter weight, and a more desirable' flexibility than.

difference than `that constructed with an outer and inner coating with wire intervening, or tbanfthe hose supported and strengthened by the metal rings before referred to.Y

Having thus described my invention, f

i I claim as new, and desire to` secure y.by Letters Patent of the United States*- i Theimproved'suction-hose herein described, conf n sistingofthe seamless hose of textile,fabricftreated'; with a suitable water-proof compound, andthe spi# Y rally-laid wire lining, substantially as described.r 1

Witnesses: 7

CHARLES BEAN, I VEDWIN Mn'roALF.

ALBERT' F. ALLEN; 1; 'i 

